| A | B |
|---|
| white light | a mixture of many colors |
| visible spectrum | the band of colors that makes up white light |
| prism | transparent object that refracts light |
| light | a kind of energy |
| reflection | the bouncing back of light from a surface |
| refration | the bending of light |
| transparent matter | matter through which light can pass |
| translucent matter | matter which scatters light |
| opaque matter | matter through which light cannot pass |
| pupil | a clear opening in the center of the iris of the eye |
| iris | the colored part of the eye |
| lens | a transparent object with at least one curved surface |
| image | a picture |
| optic nerve | a path for nerve signals beween the ey and the brain |
| retina | the part of the eye where the image forms; made of nerve endings |
| Braille | a way of writing that uses letters made of raised dots |
| concave lens | a lens that is thinner at its middle and thicker at the end; cause light rays to spread apart |
| convex lens | a lens that is thicker at the middle and thinner at the edge; causes light to come together |
